if your samba server is not accessible from the Internet try to delete or comment out these two lines from your smb.conf

interfaces = 127.0.0.1/8, 192.168.0.0/24
bind interfaces only = Yes

and restart the samba daemon (just a suggestion, may not help... for some reason your samba daemon is listening only on 127.0.0.1) ... btw, what is the IP of your server, for example the output of this command: